CLI tool to verify email addresses via syntax, DNS MX, and SMTP checks
It solves the hassle of confirming whether an email address actually exists by checking format, looking up MX records, and performing an SMTP RCPT TO probe without sending mail. The Go program parses the address, queries DNS for MX servers, then connects to the mail server to test the mailbox. It's aimed at developers, marketers, and sysadmins who need fast, scriptable validation. Compared to generic scripts, it bundles all steps into a single compiled binary with configurable timeouts and MX‑only mode.
View on GitHub →Spirzen/GoEmailVerifierTool